ARRANGEMENT IN A VENTILATING MANTLE

Abstract: Arrangement in a ventilation mantle (3) preferably to be used in windows and doors and said mantle is intended to be fastened to a ventilating opening (1) in a ventilation channel (4) of a window profile or door profile so that not too humid and too strongly ventilated and cooled air is pressed into the ventilation channel (4). By wall formations (7) within the interior of a ventilation mantle (3) at least one air lock looking ventilation channel (14) is created which shall give slowness to air streams (5) passing through the ventilation mantle (3) in order to give an effect similar to that of a heat exchanger to the air streams (5) passing through the ventilation mantle (3) and thereby preventing too cool and humid air (5) to pass into the ventilation channel (4) of the window- or door profile (2) by a too high velocity.

Description: ARRANGEMENT IN A VENTILATING MANTLE. In window- and door profiles of plastic, aluminium, steel or other material there are ventilation openings in order to drain the air around a sheet unit for example an insulation window. These openings sometimes also have the function to ventilate and drain channels and cavities within said pro¬ files. Closed air cavities cause easily moisture collections which in turn can produce frost burstings and mould affects. In preventing these openings in the profiles not to receive too much water which very easy can happen when it is raining and blowing so that an over-pressure is created in the cavities a kind of mantles are used. They look like a in¬ clined cover which has the form of a draw down sun-blind having gables. The mantle is provided with a snap function which grabs the edges of the openings cut away from the window profile. These have often an elongated narrow form. The mantle described which is on the market today allows to receive rain and moisture very easy during bad weather. This causes that the qualities aimed by the mantle are not achieved by the construction of today. It can even arise so much draught in the ventilation openings, despite of the mantles, that cold air, moisture and wet is pressed into the profile. The cold air helps in this case to deteriorate the insulation properties of the profile, with increased risk for ice- and condence formation in and on the inside portion of the profile as a result. The moisture can then give rise to mould affects. The moisture air can also when the profiles will be heated by sunlight create a strong steam pressure in the profile which makes the moisture to move in microscopic slots. When it is getting cold again frost burstings can occur so that the profile can burst anywhere. The problems described above contribute in that the window profiles are unnecessarily exposed to an accelerated aging. The frost burstings cause formations of cracs in the mate¬ rial. In the corner connections, where the profiles are weld¬ ing, screwed or glued together frost burstings can give rise to totally devastating damages. Should the corners yield the whole function of the window would be risked, when it no longer has the stability required. This concerns especially windows which can be opened. These can totally fall apart when the frame is opened in the case that the outer frame does not help to keep the inner frames together by the aid of the surrounding window opening. Further frost burstings can cause that water which freezes to ice in the bottom region of an insulation window easy can press the spacer element in the same upwards and provide a puncture of the hermetic closed insulation window. Then new moisture air gets into that space and give rise to condence on the inside of the glasses. This causes such a serious defect of the product that it does not function and has to be replaced. It is thus very important to provide for a ventilation in the channels in a window- or door profile. However this venti¬ lation does not have to be too large which easy can give rise to that the window will be totally destroyed. The problems described above with a too strong and uncon¬ trolled moisture- and air penetrating are caused by that the openings for the air communication give a too rapid air ex¬ changing. In order to get enough air supply in the channels of the profile a minimun opening area must be present. Thus it is not enough to create an inertia by making the exsisting openings smaller. The present invention is intended to solve the problems mentioned above. The interior of a ventilation mantle is pro¬ vided a lot of partition walls which create a lot of smaller cavities. These forms smaller channels which extend from the ventilation opening of one profile through the interior of the ventilation mantle and then end into air circulating out¬ doors. The cavities can be provided with walls having different appearance formed as roundings, curves with thickness variations and can be provided with different angles in re¬ lation to each other and the surrounding walls of the venti¬ lation mantle in order to be able to create unregularity in the ventilation channels so that a further enhanced friction against those air molecules moving through the small cavities is achieved. A well-balanced built up of the walls having gate formed cavities makes that ventilated air can be supplied through the channels with about the same velocity apart from that it blows much outdoors or if it is more or less calm. Also a heavy raining in combination with a strong wind directly against the ventilation openings will not let in much more water and moisture than if it is raining a lot and it is not windy outdoors. Each small ventilation channel then gets a very limited moisture penetration. The less this is the more the damages will be on the window- and door profiles. In a similar way as a heat exchanger or air gate the transporting way of the air can be lengthened so that the air slowly has time to be heated during its way into the window profile. It emits in this way also lot of moisture which can be condensated already in the ventilation mantle before it penetrates into the cavities within the window pro¬ file. The walls around the cavities can be made thin in order to take a too large area of a ventilation opening in the opening of the profile. The invention will be described below by aid of some prefered examples in reference to the drawings fig. 1 - 18 enclosed. In fig. 1 a window- or door profile 2 is illustrated having a ventilation opening 1 without a ventilation mantle and also provided with a ventilation mantle 3. Ventilation channels 4 are provided inside the profile 2. One or some of these shall be ventilated so that air 5 can pass out and into the venti¬ lation opening 1. In fig. 2 a ventilation mantle 3 is illustrated having built in partition walls 7 which create cavities 6. The ventilation opening 1 then opens out into several smaller ventilation channels 14 formed by partition- and outer walls 7. A limited freedom of movement for the ventilation air 5 according to fig. 1 then appears. The ventilation channel 14 begins at the ventilation opening l and ends at the underside 16 of the ventilation mantle 3 without the ventilation air 5 according to fig. l being able to contact the other ventilation chan¬ nels 14. In fig. 3 a lying ventilation mantle 3 is illustrated. The upper side 10 is pressed against the side of the profile dur ¬ ing mounting so that the partition and outer walls 7 are joined to the profile wall and the ventilation opening 1 according to fig. 2. The bottom side 11 is turnd outwards towards the air during mounting of the ventilation mantle 3 so that the air 5 will be supplied from below so that the cover 12 turns upwards. The cavities 6 are surrounded by partition and outer walls 7. The cavities 6 have alternately wide 9 and narrow 8 openings and endings against the cover 12. In this way curved walls 13 are obtained. These variations of the ventilation of the widths of the channels 14 make that the ventilated air 5 is stopped up and is circulated around a lot, as shown by the arrow 15. This makes that a suitable velocity of the ventilation is obtained especially well even if it is raining and is windy strongly. The ventilation channels 14 can be provided with walls 7 having different appearances in order to strengthen the air circulation 15 in the cavity 18 formed and thus equalize pressure differences between the channels 4 according to fig. 1 and the outdoor air. In this way an intended effect is obtained easier that irrespective of wind velocities and rain intensity outdoors, one receives nevertheless about a similar air exchange in the ventilation channels 14. In fig, 4 it is illustrated how the walls 7 which are wave formed, influence the ventilation air 5 when it will pass the channel 14, so that they create the air circulation 15 in a cavity 18. It is the wall 7 and the extension of the ventilation channels 14 and the number of cavities 18 which determine the slowness of the transport of the ventilation air 5 through the ventilation channel 14. The longer way the air has to move the more will the equalization be between the indoor air and outdoor air in temperature-, wind pressure- and moisture aspect. In fig. 5 the walls 7 are illustrated in abrupt waves in order to enhance the air circulation some extra in the cavities 18. In fig. 6 the partition wall 7 is V-formed. In fig. 7 and 8 the ventilation air is supplied into a cavity 6 which narrows and expands respectively. In fig. 9 the cavity 6 is S-formed and in fig. 10 the ventilation air 5 passes through a labyrinth formed cavity 6. The thickness of the walls 7 can also vary. In fig. 11 it is illustrated how a channel 6 can be made small as well as broad, ornated, oblique, straight or curved. Combinations of the examples of the formations of the walls 7 mentioned above can be present. They can also be located in different heights above and/or next to each other. Over and above the walls 7 can be formed in whatever plane when they are curved, bowed, folded or built up in any other way in order to create the ventilation channels 14. For example they can be tube formed or bee-cake formed in its cross section area 17 as is illustrated in fig. 12. The extension of the ventilation channels 14 through the ventilation mantle 3 can in other words extend in an optional direction in order to finally end at the outdoor air. In fig. 13 - 18 different embodiments are illustrated where different combinations of wall formations can be possible. The channels transporting the ventilation air do not all times need to be exactly defined in order to practise the invention. In fig. 13, 14, 17 and 18 the walls are illustrated partly as cover or roof formations which are folded or curved so that concave sides are turned to the outdoor air and the moisture which is urged from below against the opening of the mantle. The moisture then has much more difficult to penetrate into the channels of the window profile. Instead some moisture is condensated against these wall formations or is ventilated out again. The air is then circulated around under the roof formation instead of moving straight on into the channels of the window profile. Eventual moisture which will be located on the top of the wall formations drips off since these have an inclination in a falling line.

Claims: Claims 1. Arrangement in a ventilation mantle (3) located in connection to a ventilation opening (1) in preferably the ventilation channel (4) of a window profile or door profile, characterized in that there is at least one wall formation (7) within its surrounding walls and cover (16) said formation extends in any direction. 2. Arrangement according to claim 1, characterized in that the walls (7) defining the ventilation channels (14) have a curved side on at least one place. 3. Arrangement according to claim 1 or 2, characterized in that the walls (7) have a different thickness on at least one place. 4. Arrangement according to claim 1 or 2, characterized in that hole formations (17) having surrounding walls (7) constituting a cross section which forms geometric patterns in any plane.

Inventors: ERIKSSON LARS, ERIKSSON, LARS
Applicants: ERIKSSON LARS, NIEMANN HANS DIETER, ERIKSSON, LARS, NIEMANN, HANS, DIETER
Application year: 1994
Main classification: E06B7
IPC codes: E06B7, F24F7